Update VERSION for v7.2.0-rc4
[qemu.git] / accel / accel-common.c
1 /*
2 * QEMU accel class, components common to system emulation and user mode
3 *
4 * Copyright (c) 2003-2008 Fabrice Bellard
5 * Copyright (c) 2014 Red Hat Inc.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a copy
8 * of this software and associated documentation files (the "Software"), to deal
9 * in the Software without restriction, including without limitation the rights
10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11 * copies of the Software, and to permit persons to whom the Software is
12 * furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
23 * THE SOFTWARE.
24 */
25
26 #include "qemu/osdep.h"
27 #include "qemu/accel.h"
28
29 #include "cpu.h"
30 #include "hw/core/accel-cpu.h"
31
32 #ifndef CONFIG_USER_ONLY
33 #include "accel-softmmu.h"
34 #endif /* !CONFIG_USER_ONLY */
35
36 static const TypeInfo accel_type = {
37 .name = TYPE_ACCEL,
38 .parent = TYPE_OBJECT,
39 .class_size = sizeof(AccelClass),
40 .instance_size = sizeof(AccelState),
41 };
42
43 /* Lookup AccelClass from opt_name. Returns NULL if not found */
44 AccelClass *accel_find(const char *opt_name)
45 {
46 char *class_name = g_strdup_printf(ACCEL_CLASS_NAME("%s"), opt_name);
47 AccelClass *ac = ACCEL_CLASS(module_object_class_by_name(class_name));
48 g_free(class_name);
49 return ac;
50 }
51
52 /* Return the name of the current accelerator */
53 const char *current_accel_name(void)
54 {
55 AccelClass *ac = ACCEL_GET_CLASS(current_accel());
56
57 return ac->name;
58 }
59
60 static void accel_init_cpu_int_aux(ObjectClass *klass, void *opaque)
61 {
62 CPUClass *cc = CPU_CLASS(klass);
63 AccelCPUClass *accel_cpu = opaque;
64
65 /*
66 * The first callback allows accel-cpu to run initializations
67 * for the CPU, customizing CPU behavior according to the accelerator.
68 *
69 * The second one allows the CPU to customize the accel-cpu
70 * behavior according to the CPU.
71 *
72 * The second is currently only used by TCG, to specialize the
73 * TCGCPUOps depending on the CPU type.
74 */
75 cc->accel_cpu = accel_cpu;
76 if (accel_cpu->cpu_class_init) {
77 accel_cpu->cpu_class_init(cc);
78 }
79 if (cc->init_accel_cpu) {
80 cc->init_accel_cpu(accel_cpu, cc);
81 }
82 }
83
84 /* initialize the arch-specific accel CpuClass interfaces */
85 static void accel_init_cpu_interfaces(AccelClass *ac)
86 {
87 const char *ac_name; /* AccelClass name */
88 char *acc_name; /* AccelCPUClass name */
89 ObjectClass *acc; /* AccelCPUClass */
90
91 ac_name = object_class_get_name(OBJECT_CLASS(ac));
92 g_assert(ac_name != NULL);
93
94 acc_name = g_strdup_printf("%s-%s", ac_name, CPU_RESOLVING_TYPE);
95 acc = object_class_by_name(acc_name);
96 g_free(acc_name);
97
98 if (acc) {
99 object_class_foreach(accel_init_cpu_int_aux,
100 CPU_RESOLVING_TYPE, false, acc);
101 }
102 }
103
104 void accel_init_interfaces(AccelClass *ac)
105 {
106 #ifndef CONFIG_USER_ONLY
107 accel_init_ops_interfaces(ac);
108 #endif /* !CONFIG_USER_ONLY */
109
110 accel_init_cpu_interfaces(ac);
111 }
112
113 void accel_cpu_instance_init(CPUState *cpu)
114 {
115 CPUClass *cc = CPU_GET_CLASS(cpu);
116
117 if (cc->accel_cpu && cc->accel_cpu->cpu_instance_init) {
118 cc->accel_cpu->cpu_instance_init(cpu);
119 }
120 }
121
122 bool accel_cpu_realizefn(CPUState *cpu, Error **errp)
123 {
124 CPUClass *cc = CPU_GET_CLASS(cpu);
125
126 if (cc->accel_cpu && cc->accel_cpu->cpu_realizefn) {
127 return cc->accel_cpu->cpu_realizefn(cpu, errp);
128 }
129 return true;
130 }
131
132 static const TypeInfo accel_cpu_type = {
133 .name = TYPE_ACCEL_CPU,
134 .parent = TYPE_OBJECT,
135 .abstract = true,
136 .class_size = sizeof(AccelCPUClass),
137 };
138
139 static void register_accel_types(void)
140 {
141 type_register_static(&accel_type);
142 type_register_static(&accel_cpu_type);
143 }
144
145 type_init(register_accel_types);